[Bro] problem ingesting bro json logs into splunk
philosnef at yahoo.com
Thu Jul 14 07:23:32 PDT 2016
There are no 00.log files in Bro, so the automatic generation of the sourcetype bro_00 makes no sense. It does not follow the standard sourcetype pinning that all the other log files generate. find . -name "00*" in the parent logs directory reports zero logs of this type. This only occured when we moved off of Bro standard log format to JSON format.
On Thursday, July 14, 2016 10:14 AM, Brandon Lattin <lattin at umn.edu> wrote:
Do you have the Splunk installed? (https://splunkbase.splunk.com/app/1617/)
The TA will dynamically create sourcetypes based on the log name.
# Dynamic source typing based on log filename# Match: conn.log, bro.conn.log, # md5.bro.conn.log, whatever.conn.log[BroAutoType]DEST_KEY = MetaData:SourcetypeSOURCE_KEY = MetaData:SourceREGEX = ([a-zA-Z0-9-]+)(?:\.[0-9-]*)?(?:\.[0-9\:-]*)?\.logFORMAT = sourcetype::bro_$1WRITE_META = true
On Thu, Jul 14, 2016 at 8:33 AM, philosnef <philosnef at yahoo.com> wrote:
We are getting a spurious sourcetype when ingesting bro json logs into splunk.
Specifically, we are getting a sourcetype of bro_00. There is no log file named this, and the splunkforwarder is just pushing the raw logs for indexing into splunk. There is no massaging of the log data. Anyone know why this sourcetype is popping up?
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Brandon LattinSecurity Analyst
University of Minnesota - University Information Security
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